A servo electric cylinder with high precision

Abstract

The utility model discloses a servo electric cylinder with high precision, including a servo motor, a mounting base, and a housing. The output end of the servo motor is connected to the mounting base, one side of the mounting base is connected to the housing, a screw rod is arranged in the housing, a sliding seat is threadedly connected to the upper surface of the screw rod, a piston rod is connected to one side of the sliding seat, a notch is provided at one end of the piston rod, a spring is fixedly connected inside the notch, one end of the spring is fixedly connected to a guide rod, one end of the guide rod is connected to a connecting block, and a slide rail is arranged on the bottom side of the housing. The dynamic contact piece on the guide rod of the utility model contacts the static contact piece, and the static contact piece transmits a signal to the servo motor. The servo motor determines whether the piston rod contacts an object, thereby improving the accuracy of the use of the piston rod. The piston rod drives the support block at the bottom of the electromagnet to move on the slide rail to keep the piston rod in linear motion. The support block cooperates with the slide block to support the piston rod to avoid the piston rod from deflecting.

Description

Technical Field

[0001] The utility model relates to the relevant field of servo electric cylinders, in particular to a servo electric cylinder with high precision. Background Art

[0002] The servo cylinder is a product that uses a motor and a controller to generate a certain thrust of linear motion. The servo cylinder gives full play to the advantages of the motor's precise position control, precise speed control and precise thrust control. It also has the characteristics of low noise, low vibration, high speed, energy saving, the ability to add intermediate positioning points at will, and ultra-long life.

[0003] After searching, Chinese utility model patent CN215071976U discloses a servo electric cylinder with precise positioning, including a servo electric cylinder body and an output shaft installed on the output end of the servo electric cylinder body, reinforcing support plates are respectively embedded and installed at both ends of the outer wall of the output shaft, a sleeve is movably sleeved on the output shaft, and the inner ends of the reinforcing support plates are respectively installed on the inner walls of the sleeves, the reinforcing support plates are used to increase the diameter of the output shaft, and the sleeves are used to drive the reinforcing support plates. When the operator needs to install the output shaft in an opening with a larger diameter, the sleeve can be rotated, and the sleeve will drive the main board to move forward, and a triangle shape will be formed between the main board and the sub-board with the output shaft, and the main board and the sub-board will lift the rubber block, so that the rubber block can be tightly attached to the inner wall of the opening to achieve fixed installation of the output shaft. This arrangement not only improves the application scope of the servo electric cylinder, but also makes it convenient and quick to operate.

[0004] The existing device will have the following problems when in use: when the servo electric cylinder is in use, it is impossible to understand the accuracy of the piston rod hitting the object, which greatly reduces the effectiveness of the piston rod. In addition, due to insufficient supporting force, the piston rod will deviate after long-term use, causing increased wear of internal parts and reducing the accuracy of use. Utility Model Content

[0005] The purpose of the utility model is to provide a servo electric cylinder with high precision to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a servo electric cylinder with high precision, comprising a servo motor, a mounting base, and a shell, wherein the output end of the servo motor is connected to the mounting base, one side of the mounting base is connected to the shell, a screw rod is arranged in the shell, a sliding seat is threadedly connected to the upper surface of the screw rod, a piston rod is connected to one side of the sliding seat, a notch is opened at one end of the piston rod, a spring is fixedly connected inside the notch, one end of the spring is fixedly connected to a guide rod, and one end of the guide rod is connected to a connecting block, and when the screw rod rotates, it cooperates with the sliding seat to drive the piston rod to perform telescopic movement, and when the piston rod is telescopic, the connecting block first contacts the object, so that the connecting block is forced to squeeze the spring, so that the moving contact piece on the guide rod contacts the static contact piece, and the static contact piece cooperates with the servo motor to perform the next step of processing, and a slide rail is arranged on the inner bottom side of the shell, and the slide rail cooperates with the slider and the support block to keep the piston rod in linear motion.

[0007] In a further embodiment, a dynamic contact piece is provided on one side of the guide rod, and a static contact piece is provided inside the slot. The dynamic contact piece is communicatively connected with the servo motor, and the static contact piece transmits a signal to the servo motor. The servo motor determines whether the piston rod contacts an object, thereby improving the accuracy of the use of the piston rod.

[0008] In a further embodiment, an iron sheet is provided at the bottom of the piston rod, a support block is slidably connected to the slide rail, an electromagnet is provided on the support block, an induction sheet is provided on the inner side of the shell, the induction sheet is communicatively connected to the electromagnet, a buffer pad is provided on one side of the support block, and the iron sheet at the bottom of the piston rod is sucked by the electromagnet, thereby increasing the support area of ​​the piston rod in the shell. The piston rod drives the support block at the bottom of the electromagnet to move on the slide rail to keep the piston rod moving in a straight line. When the support block reaches the induction position of the induction sheet, the induction sheet controls the electromagnet to close. When the piston rod contracts, the electromagnet is started to suck the iron sheet, thereby resetting the support block, and the buffer pad prevents damage to the support block and the shell.

[0009] In a further embodiment, a slider is connected to the bottom of the slide seat, and the slider is slidably connected to a slide rail. When the slide seat moves, the slider at the bottom is driven to move on the slide rail, thereby increasing the stability of the slide seat when moving.

[0010] In a further embodiment, a groove is provided in the piston rod, a screw rod is provided in the groove, and the screw rod moves in the groove.

[0011] In a further embodiment, the end of the piston rod away from the slide seat extends to the interior of the connecting block, so that the connecting block contacts the object first, thereby preventing the piston rod from being damaged.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The connecting block cooperates with the spring, and the dynamic contact piece on the guide rod contacts the static contact piece, so that the static contact piece transmits the signal to the servo motor. The servo motor determines whether the piston rod contacts the object, thereby improving the accuracy of the use of the piston rod.

[0014] 2. The piston rod drives the support block at the bottom of the electromagnet to move on the slide rail to keep the piston rod moving in a straight line. The support block cooperates with the slider to support the piston rod, thereby preventing the piston rod from deviating and causing a decrease in the accuracy of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 3 This is a schematic diagram of a support block of the utility model;

[0018] Figure 4 It is a schematic diagram of the connection block of the utility model.

[0019] In the figure: 1. Mounting base; 2. Servo motor; 3. Housing; 4. Piston rod; 5. Connecting block; 6. Screw rod; 7. Sliding seat; 8. Guide rod; 9. Moving contact piece; 10. Notch; 11. Sliding block; 12. Slide rail; 13. Support block; 14. Induction piece; 15. Electromagnet; 16. Iron sheet; 17. Static contact piece; 18. Buffer pad; 19. Spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] See also Figure 1-4The utility model provides an embodiment: a servo electric cylinder with high precision, including a servo motor 2, a mounting base 1, and a housing 3. The output end of the servo motor 2 is connected to the mounting base 1, one side of the mounting base 1 is connected to the housing 3, a screw rod 6 is arranged in the housing 3, a slide seat 7 is threadedly connected to the upper surface of the screw rod 6, a piston rod 4 is connected to one side of the slide seat 7, a notch 10 is opened at one end of the piston rod 4, a spring 19 is fixedly connected inside the notch 10, one end of the spring 19 is fixedly connected to a guide rod 8, one end of the guide rod 8 is connected to a connecting block 5, when the piston rod 4 is extended and retracted, the connecting block 5 first contacts the object, so that the connecting block 5 is affected The force squeezes the spring 19, a dynamic contact piece 9 is provided on one side of the guide rod 8, and a static contact piece 17 is provided inside the notch 10. The dynamic contact piece 9 is communicated with the servo motor 2. At this time, the dynamic contact piece 9 on the guide rod 8 contacts the static contact piece 17, so that the static contact piece 17 transmits the signal to the servo motor 2. The servo motor 2 determines whether the piston rod 4 contacts the object, improves the accuracy of the use of the piston rod 4, reduces the repetition rate of use, and reduces the waste of energy. A groove is provided in the piston rod 4, and a screw rod 6 is provided in the groove. The end of the piston rod 4 away from the slide seat 7 extends to the inside of the connecting block 5, so that the connecting block 5 contacts the object first to avoid damage to the piston rod 4.

[0022] See also Figure 1-3 The inner bottom side of the housing 3 is provided with a slide rail 12, the bottom of the piston rod 4 is provided with an iron sheet 16, the slide rail 12 is slidably connected with a support block 13, the support block 13 is provided with an electromagnet 15, the iron sheet 16 at the bottom of the piston rod 4 is sucked by the electromagnet 15, the support area of ​​the piston rod 4 in the housing 3 is increased, the piston rod 4 drives the support block 13 at the bottom of the electromagnet 15 to move on the slide rail 12, and the piston rod 4 is kept in linear motion. An induction sheet 14 is provided on one side of the inner side of the housing 3, and the induction sheet 14 is communicated with the electromagnet 15 to support When the block 13 reaches the sensing position of the sensing sheet 14, the sensing sheet 14 controls the electromagnet 15 to close. A buffer pad 18 is provided on one side of the support block 13. The buffer pad 18 prevents the support block 13 and the housing 3 from being damaged. When the piston rod 4 contracts, the electromagnet 15 is started to absorb the iron sheet 16, so that the support block 13 is reset, ensuring the support area when the piston rod 4 moves. The bottom of the slide seat 7 is connected to a slider 11, and the slider 11 is slidably connected to a slide rail 12. When the slide seat 7 moves, it drives the slider 11 at the bottom to move on the slide rail 12, thereby increasing the stability of the slide seat 7 when it moves.

[0023] Working principle: When the screw rod 6 rotates, it cooperates with the slide seat 7 to drive the piston rod 4 to perform telescopic movement. When the piston rod 4 is telescopic, the connecting block 5 first contacts the object, so that the connecting block 5 is forced to squeeze the spring 19. At this time, the dynamic contact piece 9 on the guide rod 8 contacts the static contact piece 17, so that the static contact piece 17 transmits the signal to the servo motor 2. The servo motor 2 determines whether the piston rod 4 contacts the object, thereby improving the accuracy of the use of the piston rod 4. When the slide seat 7 moves, it drives the slider 11 at the bottom to move on the slide rail 12, thereby increasing the stability of the slide seat 7 when it moves. The electromagnet 15 attracts the iron sheet 16 at the bottom of the piston rod 4, increasing the supporting area of ​​the piston rod 4 in the housing 3. The piston rod 4 drives the supporting block 13 at the bottom of the electromagnet 15 to move on the slide rail 12 to keep the piston rod 4 in linear motion. When the supporting block 13 reaches the sensing position of the sensing sheet 14, the sensing sheet 14 controls the electromagnet 15 to close. When the piston rod 4 contracts, the electromagnet 15 is started to attract the iron sheet 16, thereby resetting the supporting block 13, ensuring the supporting area of ​​the piston rod 4 when it moves, and avoiding the piston rod 4 from deviating, which leads to a decrease in the accuracy of use.

[0024] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A high-precision servo electric cylinder, comprising a servo motor (2), a mounting base (1), and a housing (3), characterized in that: The output end of the servo motor (2) is connected to a mounting base (1), one side of the mounting base (1) is connected to a housing (3), a screw rod (6) is arranged inside the housing (3), the upper surface of the screw rod (6) is threadedly connected to a slide seat (7), one side of the slide seat (7) is connected to a piston rod (4), one end of the piston rod (4) is provided with a slot (10), the inside of the slot (10) is fixedly connected to a spring (19), one end of the spring (19) is fixedly connected to a guide rod (8), one end of the guide rod (8) is connected to a connecting block (5), and a slide rail (12) is arranged on the bottom side of the interior of the housing (3).

2. The high-precision servo electric cylinder according to claim 1, characterized in that: A moving contact piece (9) is provided on one side of the guide rod (8), a stationary contact piece (17) is provided inside the notch (10), and the moving contact piece (9) is communicatively connected with the servo motor (2).

3. The high-precision servo electric cylinder according to claim 1, characterized in that: An iron sheet (16) is provided at the bottom of the piston rod (4); a support block (13) is slidably connected to the slide rail (12); an electromagnet (15) is provided on the support block (13); an induction sheet (14) is provided on one side of the interior of the shell (3); the induction sheet (14) is communicatively connected to the electromagnet (15); and a buffer pad (18) is provided on one side of the support block (13).

4. The high-precision servo electric cylinder according to claim 1, characterized in that: The bottom of the slide seat (7) is connected to a slide block (11), and the slide block (11) is slidably connected to a slide rail (12).

5. The high-precision servo electric cylinder according to claim 1, characterized in that: A groove is arranged in the piston rod (4), and a screw rod (6) is arranged in the groove.

6. The high-precision servo electric cylinder according to claim 1, characterized in that: One end of the piston rod (4) away from the slide seat (7) extends to the interior of the connecting block (5).

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